1. Gastroenterology, Algarve University Hospital Centre, Portimão, Portugal
2. Gastroenterology and Hepatology, Hospital Universitario Ramón y Cajal. Universidad de Alcalá, IRYCIS, Madrid, Spain
3. Instituto de Salud Carlos III, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
4. Section of Gastroenterology, Dartmouth College Geisel School of Medicine, Hanover, United States
5. Section of Gastroenterology and Hepatology, White River Junction VA Medical Center, White River Junction, United States
6. Department of Gastroenterology and Endoscopy unit IIS La Fe, Hospital Universitari i Politecnic La Fe, Valencia, Spain
7. Colorectal Disease Group – Department of General Surgery, Algarve University Hospital Centre, Portimão, Portugal
8. Department of Gastroenterology and Hepatology, Colentina Clinical Hospital, Bucuresti, Romania
9. Carol Davila University of Medicine and Pharmacy, Carol Davila University of Medicine and Pharmacy, Bucuresti, Romania
10. Gastroenterology, University Hospital Augsburg, Augsburg, Germany
11. Gastroenterology, Liverpool University Hospitals NHS Foundation Trust, Liverpool, United Kingdom of Great Britain and Northern Ireland
12. Endoscopy and Gastroenterology, Hospital Universitario de Navarra (HUN), Pamplona, Spain
13. Gastroenterology, Navarrabiomed; Universidad Pública de Navarra (UPNA); IdiSNA, Pamplona, Spain
14. Gastroenterology, Royal Cornwall Hospitals NHS Trust, Truro, United Kingdom of Great Britain and Northern Ireland
15. Endoscopy Department, Northumbria Healthcare NHS Foundation Trust, North Shields, United Kingdom of Great Britain and Northern Ireland
16. Gastroenterology and Endoscopy Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
17. Endoscopy Unit, Hospices Civils de Lyon, Lyon, France
18. Endoscopy, ESGENA Scientific Secretariat, Ferdinand- Sauerbruch-Weg 16, 89075 Ulm, Germany
19. Gastroenterology, Erasme University Hospital, Brussels, Belgium
20. Gastroenterology and Hepatology, St Antonius Hospital, Nieuwegein, Netherlands
21. Department of Gastroenterology & Hepatology, Utrecht University, Utrecht, Netherlands
22. Department of Gastroenterology and Hepatology, University Hospital Leuven, Leuven, Belgium
23. Department of Biomedical Sciences, Humanitas University, Milan, Italy
24. Endoscopy Unit, IRCCS Humanitas Clinical and Research Center, Milan, Italy
25. Institute of Gastroenterology and Hepatology, Emek Medical Center, Afula, Israel
26. Rappaport Faculty of Medicine Technion Israel Institute of Technology, Haifa, Israel
27. Gastroenterology, Porto Comprehensive Cancer Center (Porto.CCC), Porto, Portugal
28. Gastroenterology, RISE@CI-IPOP (Health Research Network), Porto, Portugal